摘要
研究属电极表面与金属纳米粒子构成纳米间隙的光物理和光化学特征。首先,当可见光激发等离激元共振(SPR)效应,分析了电极电位与纳米间隙结构的光吸收和光发射过程耦合作用。然后,我们考虑当分子存在纳米间隙的情况下,SPR对分子拉曼光谱信号的增强效应。最后,我们也考虑了激发SPR弛豫以及其与分子化学反应的关系。在上述的理论计算中,我们将界面电场和光电场耦合,考虑了纳米间隙结构中嵌入分子的光电化学反应。
In this paper,we consider the photophysics and photochemistry of metal nanogaps.Firstly,we consider the surface plasmon resonance(SPR)effect and analyze the coupling of the optical absorption and photoemission process in nanogaps.Then we consider the SPR enhancement on surface-enhanced Raman spectroscopy of probe molecules in nanogaps.Finally,we consider the SPR relaxation and the relationship of molecular chemical reactions in nanogaps.From the theoretical calculations mentioned above,the photoelectrochemical current is analyzed on the basis of the coupling of the electrostatic and optical field in nanogaps.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2018年第S1期371-372,共2页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金项目(21533006
21621091)资助
关键词
纳米间隙
光电化学反应
表面等离激元共振
表面增强拉曼光谱
Nanogaps
Photoelectrochemical reaction
Surface plasmon resonance
Surface-enhanced Raman spectroscopy
